package com.gm.baseplatform.core.web;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

/**
 * 
 * @author wangguomei
 * @mail e.wanggm@gmail.com
 * 
 */
public class EncodeFilter implements Filter {

	private String encoding;
	
	public void init(FilterConfig filterConfig) throws ServletException {
		this.encoding = filterConfig.getInitParameter("encoding");
	}
	
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
      throws IOException, ServletException {
		
      if (encoding != null && !encoding.equals("")) {
        request.setCharacterEncoding(encoding);
      }

      chain.doFilter(request, response);
  }

	public void destroy() {
		encoding = null;
	}

	
}
